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Official data from INPI

VELA DE IGNIÇÃO PARA MOTORES DE COMBUSTÃO INTERNA

Prazo de SigiloInvention Patent

Application data

Number

PI8903971

Type

Invention Patent

Filing

08/02/1989

Publication

03/20/1990

Progress at the INPI

  1. Filing08/02/89
  2. Publication03/20/90
  3. Examination02/25/92
  4. Allowance03/07/95
  5. Grant12/26/95
  6. Expired12/22/09

The letters patent expired on 12/22/2009: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 11/21/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Ngk Spark Plug Co. Ltd

JP

See this company's full portfolio

Inventors

T. O. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

193098 · 08/02/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

11/21/1989

RPI 996

Carta-patente expirada

#21.1

Patente extinta em 02/08/2004

12/22/2009

RPI 2033

Concessão da patente

#16.1

12/26/1995

RPI 1308

Notificação para pagamento de retribuição

#13.1

08/08/1995

RPI 1288

Deferimento

#9.1

03/07/1995

RPI 1266

Solicitação de exame técnico

#4.1

02/25/1992

RPI 1108

Publicação do pedido de patente

#3.1

03/20/1990

RPI 1010

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